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Stockholders' Equity (Details Textual 1) - $ / shares | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 31, 2021 | Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2021 | Jul. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares purchased |  | 1,655,000 | 10,000 | 5,687,000 | 15,948,000
Treasury Stock Acquired, Average Cost Per Share |  | $ 57.66 | $ 32.81 | $ 48.37 | $ 39.75
Subsequent Event [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares purchased | 140,300 |  |  |  |
Treasury Stock Acquired, Average Cost Per Share | $ 64.19 |  |  |  |

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